Air Force Argues It Is Authorized to Keep Dennis Apel Off Highway That Runs Through Military Property

WASHINGTON—The Air Force brought its campaign against an antiwar protester to the Supreme Court on Wednesday, arguing that its powers include punishing Dennis Apel, who once smeared his blood on a base welcome sign, for proclaiming his views on a state highway that runs through military property.

Mr. Apel, 63 years old, has been vexing the commanders at California's Vandenberg Air Force Base for more than a decade. He was banned twice...